Abstract:
The invention relates to a process for producing an (ultra) high molecular weight polyethylene (HMWPE) article comprising: incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and cross-link the (U)HMWPE during or after molding the (U)HMWPE resin. In particular the invention relates to a process comprising the following steps: a) incorporating into (U)HMWPE resin a Hindered Amine Light Stabilizer (HALS) according to one of the following general formulas or combinations hereof: wherein R1 up to and including R5 are herein independent substituents; for example containing hydrogen, ether, ester, amine, amide, alkyl, alkenyl, alkynyl, aralkyl, cycloalkyl and/or aryl groups, which substituents may in turn contain functional groups, for example alcohols, ketones, anhydrides, imines, siloxanes, ethers, carboxyl groups, aldehydes, esters, amides, imides, amines, nitriles, ethers, urethanes and any combination thereof; b) molding the (U)HMWPE resin comprising the HALS, resulting in an article; c) cross-linking and sterilizing the article via gamma radiation or electron beam radiation; d) optionally, if step b results in a stock shape, machining the stock shape into an article; wherein step c and step d can be performed in either order.
Abstract:
The invention relates to a gel-spun fiber comprising a polyolefin polymer forming a fiber body, wherein a stabilizer is present inside the fiber body, characterized in that the amount of said stabilizer is between 0.05 and 10 parts by weight based on 100 parts by weight of the amount of the polyolefin polymer forming said fiber body.
Abstract:
Polymer composition containing a thermoplastic polyester elastomer, which contains hard segments of a polyester and soft segments, that contain monomer units of a dimerized fatty acid and/or a derivative thereof, which polymer composition contains at least 0.1 wt % of a UV-absorber.
Abstract:
Non-fibrous-reinforced thermoplastic molding compositions comprising a metal powder as a heat stabilizer are provided. The metal powder has a weight average particle size (dm) of at most 1 mm and the metal in the metal powder is selected from the group consisting of elementary metals from Group VB, VIB, VIIB and VIIIB of the Periodic Table, and mixtures thereof. A thermoplastic polyamide is also provided with an Mw of at most 50,000 g/mol, or a blend of at least two thermoplastic polymers with Tmelt or Tg differing by at least 20° C., or a second thermostabilizer. The invention also relates to the use of these compositions in high temperature applications.
Abstract:
Polymer composition containing a thermoplastic polyester elastomer, which contains hard segments of a polyester and soft segments, that contain monomer units of a dimerised fatty acid and/or a derivative thereof, which polymer composition contains at least 0.1 wt % of a UV-absorber.
Abstract:
Processes for producing an (ultra) high molecular weight polyethylene (HMWPE) article include incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and cross-linking the (U)HMWPE during or after molding the (U)HMWPE resin.
Abstract:
The present invention relates to a high-heat-delivery device suitable for use in an hair straightener, a hair curling iron or an ironing apparatus and suitable for heat transfer to a substrate by direct contact with said substrate, comprising at least one element (A) having a heat transfer contact surface area and at least one element (B) having a heat transfer contact surface, wherein the element (A) comprises a thermoconductive thermoplastic polymer composition comprising at least one polymer and a thermoconductive additive and wherein element (B) comprises a thermoplastic polymer composition comprising a polymer and at least one thermo-releasable substance. Further, the present invention relates to a method for releasing a thermo-releasable substance. Furthermore, the present invention relates to an ironing apparatus, a hair straightener and a hair curling iron comprising the high-heat delivery device.
Abstract:
The invention relates to a polyamide composition comprising: a. A semi-crystalline polyamide; b. An impact modifier in an amount ranging from 1 wt % to 50 wt %; c. A branching agent in an amount ranging from 0.01 to 6.0 wt %; d. An inorganic stabilizer in an amount ranging from 0.01 wt % to 2.0 wt %; e. An organic stabilizer E1 comprising a primary antioxidant group in an amount ranging from 0.01 wt % to 2.0 wt and an organic stabilizer E2 comprising a hindered amine group in an amount ranging from 0.01 wt % to 4.0 wt %; or an organic stabilizer E3 comprising a primary antioxidant group and a hindered amine group in an amount ranging from 0.02 to 6.0 wt %; or a combination of E1, E2 and E3 in a total amount of 0.02 to 6.0 wt %; wherein all wt % are based on the total amount of polyamide composition. The invention also relates to a process for preparing a container by blow molding this composition, as well as use of the container in various applications.
Abstract:
The invention relates to a process for producing an (ultra) high molecular weight polyethylene (HMWPE) article comprising: incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and cross-link the (U)HMWPE during or after molding the (U)HMWPE resin. In particular the invention relates to a process comprising the following steps: a) incorporating into (U)HMWPE resin a Hindered Amine Light Stabilizer (HALS) according to one of the following general formulas or combinations hereof: wherein R1 up to and including R5 are herein independent substituents; for example containing hydrogen, ether, ester, amine, amide, alkyl, alkenyl, alkynyl, aralkyl, cycloalkyl and/or aryl groups, which substituents may in turn contain functional groups, for example alcohols, ketones, anhydrides, imines, siloxanes, ethers, carboxyl groups, aldehydes, esters, amides, imides, amines, nitriles, ethers, urethanes and any combination thereof; b) molding the (U)HMWPE resin comprising the HALS, resulting in an article; c) cross-linking and sterilizing the article via gamma radiation or electron beam radiation; d) optionally, if step b results in a stock shape, machining the stock shape into an article; wherein step c and step d can be performed in either order.